Multiple ProductsMerits for End UserAssured Compliance

Reduced Land Area

２００9.05.eight

Kubota SMU® models in all illustrations are with pickling treatment.　　Kubota SMU® design and specifications are subject to change without notice.'KUBOTA Submerged Membrane Unit®' and 'Kubota SMU®' are registered trademarks of KUBOTA Corporation.

Solid-liquid separation is carried out with Kubota SMU®, and high effluent quality can be achieved.Permeate from Kubota SMU® can be recycled/reused for toilet flushing, irrigation, etc.

In the Conventional Activated Sludge System (CAS), effluent quality de-pends on the condition of a final clarifier.Replacing CAS with an MBR Sys-tem based on Kubota SMU® can reduce effluent TSS and give a higher Solids Retention Time (SRT).Lower effluent TSS concentration and higher SRT can result in im-proved Total Nitrogen (TN) remov-al and a more stable operation.

Retrofitting Kubota SMU® to an existing plant leads to increased treat-ment capacity without the need to build new tanks. This is due to the high-er hydraulic capacity of the MBR process based on Kubota SMU® (up to 3 times) compared with CAS, which results from a 3-fold increase in sludge concentration (12-18 g/L vs. 4-6 g/l). Moreover, a final clarifier is not necessary with the MBR process. Tanks no longer required, such as aeration tanks and clarifiers, can be used for other purposes.

Water Reuse / RecyclingPermeated water from Kubota SMU® is highly treated, and coli-forms are significantly removed. In case a Reverse Osmosis (RO) stage is applied after the MBR process, permeated water can be used directly as feed into the RO stage.

Activated sludge Permeated water

Consistent quality effluent cannot be achieved. / Efflu-ent quality is not stable.

While planning an increase in a factory's output, the ex-isting wastewater treatment plant does not have enough hydraulic capacity.

If you want to reuse the treated water,

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2,490

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510

600

600

600

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575

575

LFFF

FS

ES

EK

RM

RW

KUBOTA CorporationWater Engineering ＆ Solution DivisionMembrane Systems Sales Dept.http://www.env.kubota.ne.jp/ksmu/

Tokyo Head Office:1-3, Nihombashi-Muromachi 3-Chome, Chuo-ku, Tokyo 103-8310, JapanPhone:+81（0）3-3245-3665 Fax:+81（0）3-3245-3407

Hanshin Office: 1-1-1 Hama, Amagasaki, Hyogo 661-8567, JapanPhone:+81（0）6-6470-5145 Fax:+81（0）6-6470-5159

Dubai Branch: Office No.0-02, G+3 Bldg No.1, Jebel Ali Free Zone - South, Dubai, United Arab EmiratesPhone:+971-4-885-7033 Fax:+971-4-885-7032

KUBOTA Membrane Europe Ltd.7c Suite, Elsinore House, 77 Fulham Palace Road, London, W6 8JA, UK Phone:+44（0）20-8741-5262 Fax:+44（0）20-8563-1616http://www.kubota-mbr.com/

KUBOTA Membrane USA Corporation14824 NE 95th Street, Bldg. 6, Redmond, WA 98052, USAPhone:+1-425-898-2858 Fax:+1-425-898-2853Web:www.kubota-membrane.com

ES type EK type RW type

TotalMembrane

Surface (m2)

Weight (dry) (kg)Height Width

Dimensions (mm)

LengthUnit Type

Height

Length

Width

KUBOTA Submerged Membrane Unit®

For Water and Our Life

The footprint of the MBR system is considerably smaller than that of a CAS system. The MBR system does not require a primary or secondary clarifier, while also having a reduced size of aeration tank.

Various Applications

The Membrane Unit consists of a Membrane Case (Upper part) and a Diffuser Case (Lower part). The membrane case houses multiple membrane cartridges that are connected to a manifold pipe via transparent tubes, while the diffuser case houses a diffuser. You can pull out individual mem-brane cartridges for maintenance work.

MembraneCartridge

Tube

Diffuser Case

MembraneCase

Diffuser Pipe

Manifold

By opening the cleaning valve, you can clean the dif-fuser system utilising a backflow of mixed liquor and air. This valve is closed during aeration. If a magnetic valve is installed, this operation can be performed au-tomatically.

The membrane sheet is made from Chlorinated Polyethylene with a nom-inal (maximum) pore size of 0.4μm (average: 0.2μm).

Diffuser Cleaning:Easy maintenance with unique system

More than 3,200 All Over the World

Por

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istr

ibut

ion

0 0.1 0.2

Diameter（µm）0.3 0.4 0.5

CAS

MBR

Equalization Tank

WasteWater

Aeration Tank Secondary Clarifier Effluent Tank

Equalization Tank Aeration Tank（Membrane Tank）

（Secondary Clarifier）Effluent Tank

WasteWater

Effluent Water

KUBOTA Submerged Membrane Unit®

Features of the Kubota SMU

Structure of the Membrane Unit

The Membrane Sheet is welded on each side of the membrane panel. Treated water permeates through the membrane sheets and spacers to come out via the nozzle.Type 515 cartridge has two (2) nozzles. These can permeate from all over the membrane sheets equally to prevent the larger membrane sheet from fouling for a long time.

Structure of the Membrane Cartridge

Conventional Activated Sludge System (CAS) vs. Membrane Bioreactor (MBR)

Global Installations

Micro Structure

Blower Cleaning Valve

Diffuser Pipe

DiffuserCase

Drain/Outlet

Air Pipe

CleaningPipe

Nozzle

Membrane Panel

Spacer

Activated Sludge

Activated Sludge

(During Operation)

(During Cleaning)

1,020

1,560

490

575

Membrane Sheet

Effluent Water

Food Factory

SemiconductorFactory

Automobile Factory

WWTP

Farm

Hospital

Dam

Natural Gas Production Facility

Airport

Shopping mall

Chemicals Processing Plant Ship

ApartmentGolf course

School

Beverage Factory

Building

Cleaning Factory

Landfill Leachate Treatment Plant

Other type Kubota SMU®

You can clean the KUBOTA Submerged Membrane Cartridges in-situ with chemicals such as sodium hypochlorite for organic fouling or oxalic acid for inorganic fouling. Since the membrane modules do not need to be removed from the membrane tank and placed in a separate purpose-built chemical cleaning tank, this system re-sults in significant resource savings.

2.Simple Chemical Cleaning

ChemicalDosing Tank

PermeatePump

No need tohoist!

You can locate a damaged membrane cartridge easily by lowering the water level in the tank and visually checking the individual permeate tubes, with no need to drain the tank or inspect the entire membrane unit.　

3.Simple Maintenance

An internally coloured tube would indicate a damaged

membrane cartridge

Since Membrane Cartridges can be individually re-moved, you do not need to replace the entire membrane module or remainder of functional cartridges.

4.Simple Replacement

OK to replaceeach cartridge

Since every wastewater has different characteristics, MBR plant design would be different. KUBOTA Corporation has a great number of applications and un-paralleled experience to meet your specific requirements.

The Flat Plate structure of the membrane cartridge pres-ents less obstacles to scouring flow. Less screening res-idues such as coarse solids and fibres to be tangled to the KUBOTA Submerged Membrane Unit® can reduce the need and frequency of chemical cleaning.

Other type Kubota SMU®

1.Simple Structure

Smoothupward flow

Type 510 Cartridge(LF,FF,FS,ES,EK)

Type 515 Cartridge(RM,RW)

MembraneTank

MembraneTank

Chemical CleaningTank

Europe

Africa

MiddleEast

Japan

North &Latin America

Asia &Oceania